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What is the m...

Question

What is the mass percent of carbon in carbon dioxide?

A

0.034

%

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B

27.27

%

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C

3.4

%

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D

28.7

%

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Solution

The correct option is B $27.27$ %
Molecular formula of carbon dioxide is $C O_{2}$ .
Molar mass of carbon dioxide is $12 + 2 (16) = 44$ g/mol.
Mass percentage of carbon in carbon dioxide is $\frac{12}{44} \times 100 = 27.27 %$ .

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What is the mass per cent of carbon in carbon dioxide ?

(a) 0.034% (b) 27.27% (c) 3.4% (d) 28.7%

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